<?php
namespace core\util;

use core\Object;
class String implements Object{

	public static function isNull($string){
		if($string == null){
			return true;
		}
		return false;
	}

	public static function isEmpty($string){
		if(static::isNull($string) || strlen(trim($string)) == 0){
			return true;
		}
		return false;
	}
}